5.0L V8 Windsor (AU Falcon) Engine
Information on the 5.0L V8 Windor engine as found in the Australian Ford Falcon AU XR8.
General Information
| Cylinders | 8 |
| Displacement | 4942 cc / 302 ci |
| Firing Order | 1,3,7,2,6,5,4,8 |
| Cylinder Orientation | From front of engine 1,2,3,4 LHS5,6,7,8 RHS |
CAN
This vehicles uses a serial bus for various devices throughout the vehicle. This can include the dashboard, ABS, and Body Control. Haltech does not support this.
Sensor Information
Crank/Cam Sensor
This engines uses a Crank Position Sensor and a Cam Position Sensor. The crank trigger has a 36x tooth wheel with a 1x tooth missing gap and is located on the front crank pulley. The cam trigger has a single tooth.
Crank Sensor
A Reluctor crank position sensor is used. This is located on the front of the engine.
Reluctor Wiring
| Pin | Description | Haltech Connection (Trigger 4-core) |
| 1 | Reluctor + | Yellow |
| 2 | Reluctor - | Green |
Cam Sensor
A Reluctor cam sensor is used. This is located on the front of the engine near the ignition coils.
Reluctor Wiring
| Pin | Description | Haltech Connection (Home 4-core) |
| 1 - Dark Blue/Orange | Reluctor + | Yellow |
| 2 - Dark Green | Reluctor - | Green |
Ignition Coils and Igniter
This engine has waste spark ignition. There are two coil packs each with a 4x spark discharge terminals. Each of the coil packs is actually 2x dual post coils in one unit. The ignition coils on this engine require an external igniter module as the OEM ECU has the igniters internally. A Haltech HPI 4 igniter module is a good choice for this.
There are two of these coils
Centre pin is the 12V+ Switched
| Wire Colour | Description | Haltech Connection |
| Yellow/Black | Coil 1+6 Igniter Signal | Igniter Channel 1 (Ignition Output 1) |
| Yellow/Red | Coil 3+5 Igniter Signal | Igniter Channel 2 (Ignition Output 2) |
| Yellow/White | Coil 4+7 Igniter Signal | Igniter Channel 3 (Ignition Output 3) |
| Brown | Coil 2+8 Igniter Signal | Igniter Channel 4 (Ignition Output 4) |
Red/Dark Green | 12V+ Switched | --- |
Haltech HPI Igniter
A Haltech HPI 4 igniter is recommended for this application.
See the Haltech HPI Quick Start Guide for wiring information on these igniters.
Throttle Position Sensor
This engine uses a cable operated throttle body with a position sensor.
| Pin | Description | Haltech Wiring |
| 1 - Orange/Black | 5V+ | 5V+ (Orange) |
| 2 - Dark Green/Black | TPS Signal | Spare AVI (AVI-10 White) |
| 3 - Black/White | Signal Ground | Signal Ground (Black/White) |
MAP Sensor
These engines do not come with a MAP sensor.
Use the internal MAP sensor that comes with your ECU. For higher boost levels an external MAP sensor should be used instead, connected to a spare AVI.
Idle Valve
This engine uses a 2-pin BAC (Bypass Air Control) Valve which is duty controlled by the ECU via 1x output.
2-pin BAC Wiring
| Pin | Description | Haltech Connection |
| 1 | Open Signal | Spare Output |
| 2 | Power | 12V+ Switched |
Coolant Temperature
Wiring is not polarity sensitive
| Pin | Haltech Connection |
| 1 | Any Spare AVI* |
| 2 | Signal Ground |
An AVI with a selectable Pullup should be used. If not and external 1k pullup to 5V should be connected.
Air Temperature
An Inlet Air Temperature Sensor is fitted to this engine. It is located in the inlet duct.
Wiring is not polarity sensitive
| Pin | Haltech Connection |
| 1 | Any Spare AVI* |
| 2 | Signal Ground |
An AVI with a selectable Pullup should be used. If not and external 1k pullup to 5V should be connected.
Knock Sensor
This engine does not come with a knock sensor. When using an Elite 2000 or 2500 model a Haltech HT-011100 Knock Sensor can be added to the block if required.
Haltech HT-011100 Knock Sensor
| Pin | Haltech Connection |
| 1 | Knock Signal |
| 2 | Signal Ground |
MAF Sensor
Although most users of Haltech ECUs will be deleting the MAF, it is possible to use a MAF if you prefer.
| Pin | Description | Haltech Connection |
| 1 - N/C | No Connection | --- |
| 2 - Red | 12V+ Switched | --- (Grey/Red) |
| 3 - Black/Dark Green | Chassis Ground | --- |
| 4 - Tan/Light Blue | Signal Ground | Signal Ground (Black/White) |
| 5 - Light Blue/Red | MAF Signal | Spare AVI |
6 - N/C | No Connection | --- |
O2 Sensors
This engine has Narrow Band O2 sensors. Although they can be used for light load tuning for Lambda 1.0, they cannot be used for tuning under power.
Adding a Haltech 2-channel Wideband WB2 Kit (highly recommended)
For correct operation a Haltech WB2 kit is highly recommended for this application, with the provided 4.9 sensors replacing the pre-cat sensors. Sensors use a 22mm socket or spanner to remove and replace.
Vehicle Speed Sensor
This engine uses a Hall Effect Vehicle Speed sensor. The signal first goes to the instrument cluster which then passes on the signal to the ECU.
If wiring direct to sensor
| Pin | Description | Haltech Connection |
| + | 12V+ Switched | --- |
| S | Signal | Spare SPI |
| - | Signal Ground | Signal Ground (Black/White) |
Injector Data
Flow
The injector flow rate is measured with the injectors held wide open at 100% duty. For fuel systems with a fixed regulator pressure (often returnless systems) that is not referenced to manifold pressure the flow needs to be mapped over Manifold Pressure for accurate tuning.
Injector Flow: 200 cc/min
Dead Time
When an injector is commanded to open for a certain amount of time, the dead time is the amount of time the injector is not actually open during this period. It covers the time to energise the solenoid and begin to open and the time to close as well. There are also transient periods during which the injector is opening and closing where fuel flow is not at full capacity so this lost peak flow period is also taken into account.
OEM ECU Information
Location
The ECU is located in the passenger left side kick panel. The ECU bracket is rivetted in place and requires drilling to remove.
ECU Pinout
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